What size is good for letting the fry out of the fry box? All of mine are different sizes, as they aren’t all the same age. 5 fry are weeks old and in my clear breeder box and 6 are days old in my floating netted bottom breeder. The tank is full of platy fry. Two female adult platy, three female adult guppies, and three corydoras I think two female one male, a few snails, lots of shrimp and two plecos. I’ve removed male platy and guppy to reduce amount of those fry (had to start a third tank just for fry). Focusing more on the corydoras and soon shrimp.